Bacterial Canker of Sweet Cherry (Prunus avium L.) Caused by Pseudomonas syringae pv. morsprunorum

Autor: Ill-Sup Nou, Gyoung-Hee Kim, Young-Jin Koh, Jae-Seoun Hur, Seung-Don Lee
Rok vydání: 2005
Předmět:
Zdroj: Research in Plant Disease. 11:80-84
ISSN: 1598-2262
DOI: 10.5423/rpd.2005.11.1.080
Popis: Bacterial canker of sweet cherry (Prunus avium L.) was observed in farmers\` orchards in Goesan, Chungbuk in 2003. Typical canker symptoms occurred on the branches or twigs of sweet cherry in early spring and bacterial exudates oozed out of the cracked barks of diseased trees. Watersoaked brown symptoms appeared on the leaves and severe infection caused thorough defoliation on the branches or twigs of sweet cherry. When severely infected branches or twigs were cut, irregular and rusty-colored symptoms in sapwood and heartwood were clearly found, indicating that they can serve as specific symptoms of bacterial canker of sweet cherry. The causal bacterium responsible for the symptoms was isolated purely from the infected sapwood of sweet cherry. Based on its morphological, physiological and biochemical characteristics, the causal bacterium was identified as Pseudomonas syringae pv. morsprunorum. The bacterium was pathogenic on sweet cherry and Japanese apricot, but not on peach, cherry, and kiwifruit. It is proposed that the disease be named as bacterial canker of sweet cherry.
Databáze: OpenAIRE